There’s a tremendous amount of materials development taking place now to protect and improve the performance of the modern solider. One of the materials being actively investigated isn’t new at all, however. It’s wool—the same material used by the Army of the Potomac in the 1860s. The Marine Corps temporarily banned the wearing of synthetic materials by combat troops after soldiers sustained serious burns from clothing that burned, and sometimes melted, fusing to skin. Short-term, soldiers shifted to all-aramid clothing, an expensive and uncomfortable solution. The Army Soldier Systems Center has been developing a family of woolen, flame-resistant woven and knitted fabrics to replace polyester and nylon. The American Sheep Industry Association and the American Wool Council developed two knit fabrics and one woven fabric that are flame retardant. The US Army is current considering a fabric that is a blend of 50 percent wool and 50 percent Nomex, a meta-aramid made by DuPont. Wool improves the comfort and reduces the cost. TenCate Southern Mills received a million dollar order from the US Army to provide Lenzing FR rayon, for the Defender M program in which a fabric with a camouflage print made from Lenzing FR and para-aramid or polyamide. Lenzing FR may also be paired with wool in another program under evaluation.
To give engineers a better idea of the range of resins and polymers available as alternatives to other materials, this Technology Roundup presents several articles on engineering plastics that can do the job.
The first photos made with a 3D-printed telescope are here and they're not as fuzzy as you might expect. A team from the University of Sheffield beat NASA to the goal. The photos of the Moon were made with a reflecting telescope that cost the research team £100 to make (about $161 US).
A tiny humanoid robot has safely piloted a small plane all the way from cold start to takeoff, landing and coming to a full stop on the plane's designated runway. Yes, it happened in a pilot training simulation -- but the research team isn't far away from doing it in the real world.
Some in the US have welcomed 3D printing for boosting local economies and bringing some offshored manufacturing back onshore. Meanwhile, China is wielding its power of numbers, and its very different relationships between government, education, and industry, to kickstart a homegrown industry.
You can find out practically everything you need to know about engineering plastics as alternatives to other materials at the 2014 IAPD Plastics Expo. Admission is free for engineers, designers, specifiers, and OEMs, as well as students and faculty.
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